Dealing with marker lights in wetrooms

There is no point waterproofing a wetroom if you are going to cut holes though it to locate lights.

Although the lights themselves maybe suitable for wet areas they generally don’t have a waterproof housing which can be bonded into a tanked floor.

This is a solution we came up with using standard plumbing and electrical components to prevent water migrating to the floor below.

We are not necessarily talking about water on tiles here but water getting between the tiles and the tanking system.

• Here we used a 50mm Solvent Weld access plug with screw cap
• Removed the cap and drilled holes for the flexes
• Inserted IP68 Stuffing Glands
• Pulled the flexes through the glands and tightened
• Screwed the access socket back on to the lid
• Drilled a hole through a piece of 1.5mm ABS plastic slightly smaller than 50mm waste pipe
• Solvent welded a piece of 50mm waste pipe to the plate
• Solvent weld a 50mm straight coupling to the waste pipe
• Solvent welded the coupling to the access socket
• Routered a rebate to the floor ply and using MitreBond , instantly bonded it to the ply, finishing flush with the plywood floor
• The ABS plate was tanked around the aperture of the socket with the rest of the floor
• A hole can be drilled in the tile to suit the marker light bridging the socket aperture.  
• We used sweeping bends and ABS plates to locate wall lights low level in a shower wall; water cannot get up a bend.

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Detailed instructions: